AMD has refreshed its FX chip line-up with two new parts based on the Piledriver architecture.

The FX-4350 is a quad core chip with 8MB of L3 cache and a 125W TDP. It is clocked at 4.2GHz and it can hit 4.3GHz on Turbo. It is basically 400MHz faster than the FX-4300 and it has twice as much L3 cache, yet they are both priced at $122. However, the FX-4300 is a 95W part.

The FX-6350 is a six core chip clocked at 3.9GHz, with a max turbo clock of 4.2GHz. It has 8MB of L3 cache and a 125W TDP rating. It is 400MHz faster than the 95W FX-6300 and it is priced at $132.

The first AMD FX-series CPUs based on the Piledriver architecture launched back in October and now it appears that a refresh is coming, as two parts out of four rumored SKUs, have appeared for pre-order in the USA.

As you already know, back in October, AMD launched the FX-8320 and FX-8350 125W TDP parts as well as the FX-4300 and the FX-6300 95W TDP parts. Leaked slides and rumors suggested that AMD would launch a couple of more SKUs, including FX-4320, FX-4350, FX-6350 and the FX-8300 by the end of Q4 2012. The first two, FX-4350 and the FX-6350 have appeared for pre-order at shopblt.com, a US e-tail site.

The FX-4350 is a quad-core SKU with 8MB of L3 cache, a 125W TDP and works at 4.2GHz base and 4.3GHz Turbo clock. The FX-6350 is a six-core part that has same 8MB of L3 cache, same 125W TDP and works at 3.9GHz base and 4.2GHz Turbo clock.

According to these leaked pre-order prices, the FX-4350 is listed at US $142.68, or US $9 more than the FX-4300 in the same store. The FX-6350 is priced at US $154.57, which is US $10 more expensive than the FX-6300 in the same store.